4
I think you may not be being specific enough for him so ill sum it up
you need to open your ftp app (i.e. WSFTP, WinSCP)
module installation
extract zip file to desktop and be sure that the file that you are about to upload is the module folder. In other words be sure that the folder with the modules name on it is not inside of another folder. Many times the folder that you unzip will contain additional folders in it that do not get ftp'd up.
now take your mudule folder and put it into public_html/modules/ directory
Theme installation
extract to desktop and navigate to the theme folder, like modules themes also come with extras(ironically referred to as crap.) Now take the them folder and upload it to this directory public_html/themes
Now go to your admin page and install the new module then go to preferences and make your new theme selectable.
best of luck!